Logging errors and exceptions on AWS Lambda

Question

I have some AWS Lambda functions that get run about twenty thousand times a day. So I would like to enable logging/alert to monitor all the errors and exceptions.

The cloudwatch log is giving too much noise, and difficult to see the error. Now I'm planning to write the log to AWS S3 Bucket, this will have an impact on the performance.

What's the best way you suggest to log and alert the errors?

Answer 1

An alternative would be to leave everything as it is (from application perspective) and check AmazonCloudWatch Logs Filter.

You use metric filters to search for and match terms, phrases, or values in your log events. When a metric filter finds one of the terms, phrases, or values in your log events, you can increment the value of a CloudWatch metric.

If you defined your filter you can create a CloudWatch Alarm on the metric and get notified as soon as your defined threshold is reached :-)

Edit

I didnt check the link from @Renato Gama. Sorry. Just follow the instructions behind the link and your problem should be solved easily...